Allison 250-C30
Service difficulty reports · 402
Newest first. General aviation reporting is voluntary.
Query with SQL
duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE engine_model_key = '250C30' ORDER BY difficulty_date DESC"
Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE engine_model_key = '250C30' ORDER BY difficulty_date DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR ALGA097279Bearing · damagedTAIL ROTOR BEARING HAS FLAT SPOTS ON NEEDLE ROLLERS. REPLACED W/NEW PART BY OVERHAUL SHOP.SDR ALGA097281Trunnion · corrodedTAIL ROTOR TRUNNION HAS CORROSION DAMAGE ON SPLINES. REPLACED W/SERVICEABLE HOUSING BY OVERHAUL SHOP.SDR CA040902003Fitting · cracked(CAN) TAIL BOOM FITTINGS P/N 206-031-403-001 AND 206-032-409-001 LT SIDE TOP AND BOTTOM CRACKED.SDR ALGA096402Blade · separatedFOUND CORROSION AND SEPARATION AT SKIN/SPAR INTERFACE NEAR LOWER OB GRIP FINGER DOUBLER. REMOVED AND REPLACED DEFECTIVE BLADE WITH NEW BLADE. SCRAPPED DEFECTIVE BLADE.SDR ALGA096566Blade · debondedLOWER SURFACE OB GRIP FINGER DOUBLER DEBONDED. FOUND CORROSION BETWEEN SKIN AND SPAR. REPLACED UNIT W/NEW BLADE.SDR ALGA095538Gear · nickedON INSTALLATION OF T/M GEAR FOUND NICKS ON EDGE OF GEAR TEETH CAUSING ABNORMAL NOISE WHEN SPINNING WITH PINION GEAR. SENT TO VENDOR FOR WARRANTY.SDR HEEA096020Wire · burnedNR 2 ENGINE HAD RUNAWAY BEEP CAUSING A 30 PERCENT TORQUE SPLIT. RETARDED NR 2 THROTTLE TO 38 PERCENT TORQUE AND LANDED. MAINTENANCE FOUND THE WIRES FOR THE NR 2 NS BEEP MOTOR RUNNING BETWEEN CONNECTORS P314 AND P104 TO BE BURNED AND CHAFED AT FUSELAGE STATIOSDR YTRR095305Fuel Control · malfunctionedCOULD NOT SHUT DOWN AIRCRAFT AFTER THROTTLE WAS CLOSED.SDR HEEA096021Wire · damagedNR 2 ENGINE N2 BEEP UNCONTROLLABLE CAUSING 30 PERCENT TORQUE SPLIT. RETARDED NR 2 THROTTLE TO A SETTING OF 38 PERCENT AND LANDED. MAINTENANCE FOUND BAD WIRING IN THE COPILOT COLLECTIVE STICK. REWIRED THE COLLECTIVE STICK AND REPLACED THE GOVERNOR SWITCH.SDR AUS20040440Stiffener · cracked(AUS) RT FORWARD ENGINE MOUNT STIFFENER CRACKED THROUGH. CRACK MIGRATED INTO LATERAL FRAME AT STN 155.SDR ALGA094690Tach Generator · wornFOUND SPLINES INSIDE ARMATURE AND ON DRIVSHAFT WORN. DISCREPANCY FOUND ON 900 HR INSPECTION. RETURNING PART TO VENDOR FOR WARRANTY.SDR CA040526004Case · corroded(CAN) A DOZEN STUD HOLES FOUND DEEPLY CORRODED AND NEEDED SPECIAL REPAIR IAW MFG INSTRUCTIONS. THE CORROSION IS CAUSED BY DISSIMILAR METALS AND MOISTURE. MFG CANNOT SOLVE THE PROBLEM DEFINITELY BUT SUGGEST METHODS TO SLOW IT DOWN AND DIMINISH DAMAGE TO CASE.SDR AUS20040386Gear · failed(AUS) MAIN ROTOR TRANSMISSION INPUT PINION GEAR FAILED. GEAR TEETH STARTING TO BREAK DOWN WITH DISTINCT WEAR PATTERN AND PITTING ON THE FLANK OF ALL GEAR TEETH AND ADVANCED BREAKING DOWN OF SOME OF THE TEETH. METAL CONTAMINATION OF TRANSMISSION.SDR ALGA094285Gear · spalledFOUND SPALLING AND GALLING ON PINION GEAR TEETH. SENT TO VENDOR FOR WARRANTY CREDIT.SDR ALGA094257Turbine Wheel · out of toleranceFLOW AREA ON THIS PART IS BELOW MIN. FLOW OF 5.770. ACTUAL: 5.74 RETURNED PART TO VENDOR FOR WARRANTY CREDIT.SDR YTRR094256Bushing · wornWORN BUSHING ON RESTRAINT MOUNT AT LATERAL SPRING ATTACH POINT.SDR YTRR094255Bushing · wornWORN BUSHINGS ON RESTRAINT MOUNT AT LATERAL SPRING ATTACH POINTS.SDR 2004FA0000308Swashplate · incorrectRECEIVED SWASHPLATE ASSY FROM VENDOR OVERHAUL SHOP. DURING INSTALLATION FOUND LEVER (PN 206-010-467-001) WAS INSTALLED UP-SIDE-DOWN. ALSO FOUND SHIMS (PN 206-010-463-005) WERE NET STACKED EVENLY. PROBABLE CAUSE: WORKMANSHIP AND QA PROBLEM.SDR HEEA094159Seal · leakingNR 1 HYDRAULIC LIGHT ILLUMINATED DURING CRUISE FLIGHT FOLLOWED BY FLUCTUATING PRESSURE. SHUT DOWN NR 1 HYDRAULIC SYSTEM. MAINTENANCE FOUND NR 1 HYDRAULIC PUMP DRIVE SHAFT SEAL LEAKING AND NR 1 HYDRAULIC PUMP PRESSURE HOSE RUPTURED. REPLACED NR 1 HYDRAULIC PSDR HEEA094158Starter Gen · failedDURING CRUISE FLIGHT, NR 2 DC GENERATOR LIGHT ILLUMINATED. PILOT FOLLOWED AIRCRAFT EMERGENCY CHECKLIST FOR SINGLE DC GENERATOR FAILURE AND LANDED AIRCRAFT. MAINTENANCE REPLACED NR 2 STARTER GENERATOR.SDR ALGA093730Blade · corrodedTRAILING EDGE EXTRUSION HAS AREA APPROX. 5.SDR ALGA093732Blade · corrodedMAIN ROTOR BLADE TRAILING EDGE EXTRUSION EXFOLIATED AT STA. 98 AND 130. DAMAGE IS CONSIDERED A MATERIAL DEFECT.SDR HEEA093676Engine · malfunctionedDURING CRUISE FLIGHT NR 2 ENGINE TORQUE DROPPED TO 10 PERCENT AND NR 1 ENGINE TORQUE ROSE TO 99 PERCENT. ROTOR RPM DECREASED TO 104 PERCENT. MAINTENANCE REPLACED THE NR 1 ENGINE ASSEMBLY.SDR HEEA093673Oil Cooler · crackedIN CRUISE FLIGHT, THE NR 2 ENGINE OIL TEMPERATURE ROSE TO THE RED LINE. SECURED ENGINE AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE AFT JUNCTION OF THE OIL COOLER BLOWER DUCT CRACKED AND SPLIT OPEN.SDR AC2A093322Servo · brokenPILOT VALVE INPUT ROD TURN BARREL HAD BROKEN RETAINING BOLT. THIS ENABLED THE BARREL TO TURN WHICH COULD ALTER THE SERVO TIMING. REPLACED MAIN ROTOR ASSEMBLY.SDR HEEA092085Fuel Control · failedNR 2 ENGINE HAD HIGH SIDE GOVERNOR FAILURE. MAINTENANCE REPLACED THE FUEL CONTROL UNIT.SDR AUS20031106Armature · faulty(AUS) STARTER-GENERATOR ARMATURE LOST MAGNETISM.SDR 2003FA0001089Bolt · burnedDURING A SCHEDULED INSPECTIOM FOUND PRIMARY ELECTRICAL CABLE, P6D000, IN BATTERY COMPARTMENT TO HAVE A BURNED AREA ADJACENT TO RT BATTERY HOLD DOWN BOLT. MFG, STC SH297NM HAS BEEN INSTALLED ON THIS AIRCRAFT. THE BURNED AREA WAS CAUSED BY HEAVY CONTACT OF THE PSDR BAQA090021Bearing · wornISOLATION MOUNT BEARING OUT OF LIMITS.SDR HEEA090146Wire Harness · damagedDURING APPROACH, DID NOT GET A GREEN LIGHT FOR NOSE GEAR. ABORTED LANDING. LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED DOWN LOCK HARNESS.SDR 2003FA0001049Exhaust Stack · crackedTHE EXHAUST STACK HAD TO BE REPAIRED SEVERAL TIMES SINCE 400.0 HOURS SINCE NEW. NOW THE AC HAS 1627.3 HOURS TT. SERVICE REPORTS WAS DONE TO MFG SINCE 12-2000. IN 3 OCCASIONS THE MFG SENT THE EXHAUST PN 369D2860501 FOR REPLACEMENT, BUT IT DID NOT FIT INTO THSDR 2003FA0001062Exhaust Stack · crackedTHE EXHAUST STACK HAD TO BE REPAIRED SEVERAL TIMES SINCE 400.0 HOURS SINCE NEW. NOW THE HELICOPTER HAS 1568.2 HOURS TAT. IN 3 OCCASIONS THE MFG SENT THE EXHAUST PIN 369D2860-501 FOR REPLACEMENT BUT IT DID NOT FIT INTO THE HELICOPTER. IN MEAN TIME, PART CONTSDR ALGA089062Nozzle · mismanufacturedOMEGA RING GROOVE MEASURED AT .021 INCH BELOW SERVICABLE LIMIT OF .100 RETURNED PART TO VENDOR FOR WARRANTY CREDIT.SDR ALGA089030Coupling · galledN1 COUPLING FOUND TO HAVE INTERNAL SPLINES GALLED ON INSPECTION.SDR ALGA088970Fuel Nozzle · defectiveNEW PART CAUSED FUEL NOZZLE TO STREAK ON FINAL TEST AFTER INSTALLATION. REMOVED AND REPLACED.SDR ALGA089012Coupling · galledN1 COUPLING FOUND TO HAVE INTERNAL SPLINES GALLED. RETURNING PART TO VENDOR FOR WARRANTY CREDIT.SDR ALGA089015Coupling · defectiveN1 COUPLING FOUND TO HAVE INTERNAL SPLINES DAMAGED ON INSPECTION. RETURNED PART TO VENDOR FOR WARRANTY CREDIT.SDR ALGA089016Coupling · galledN1 COUPLING FOUND TO HAVE SPLINES GALLED ON INSPECTION. RETURNED PART TO VENDOR FOR WARRANTY CREDIT.SDR ALGA089023Coupling · galledN1 COUPLING FOUND TO HAVE SPLINES GALLED ON INSPECTION. RETURNED PART TO VENDOR FOR WARRANTY CREDIT.SDR 2003FA0000963Fitting · crackedDURING A ROUTINE INSPECTION THE UPPER LEFT HAND TAIL BOOM ATTACH FITTING WAS FOUND TO HAVE A CRACK EMANATING FROM THE FASTENER HOLES WHICH ATTACH THE FITTING TO THE ADJACENT STRUCTURE.SDR HEEA088561Valve · malfunctionedVALVE WOULD NOT CYCLE. SHOP REPAIR.SDR HEEA087824Arm · stickingBOTH ARMS STICK IN THE DOWN POSITION. REPLACED WITH SERVICEABLE PART.SDR HEEA087812Relay · malfunctionedSTARTER RELAY STICKS CLOSED. TO BE SENT TO VENDOR.SDR HEEA087245Exciter · inoperativeEXCITER, INOPERATIVE. TO BE SENT TO VENDOR FOR REPAIR.SDR HEEA087246Gyro · precessesDIRECTIONAL GYRO PRECESSES. SHOP REPAIR.SDR AC2A087916Valve · defectivePART IS DEFECTIVE.THE GREEN ANTI -ICE ADVISORY LIGHT WAS REMAINING ON REGARDLESS OF SWITCH POSITION. THE ANTI -ICE SOLENOID VALVE WAS REPLACED BUT DID LIGHT REMAINED ON. THE ANTI-ICE SOLENOID WAS REPLACED AGAIN AND THE PROBLEM WAS CURED. SOLENOID WAS REPLACED.SDR AC2A086766Filter Housing · brokenDURING SCHEDULED FILTER REPLACEMENT THE SPRING CLIP RETAINER WAS FOUND BROKEN AND FELL OUT OF THE HOUSING IN PIECES WHEN THE FILTER WAS REMOVED. FILTER HOUSING WAS REPLACED.SDR HEEA086547Seal · leakingSEAL LEAK ON TEST CELL RUN. INSPECTION OF PART REVEALED SEAL SPLIT. INSTALLED NEW SEAL.SDR AC2A086761Ring · brokenDURING FUEL FILTER CHANGE, RETAINING RING INSIDE FUEL FILTER HOUSING CAME OUT IN SEVERAL PIECES. REPLACED FILTER HOUSING AND RETAINING RING.SDR CA030509002Shim · missing(CAN) A GEARBOX WAS DISASSEMBLED FOR INSPECTION DUE TO REPORT OF LOW OIL PRESSURE. 4 OF 8 SMALL SCREWS USED TO RETAIN A REPAIR SHIM WERE FOUND MISSING. THE REPAIR SHIM WAS LOCATED UNDER THE TORQUEMETER AND JOURNAL FLANGED SUPPORT. REPAIR SHIM WAS LIKELY USE
Back to Allison 250-C30